springboot解决jackson序列化Long类型精度失效问题

import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.HashMap;
import java.util.Map;


@Configuration
public class JacksonSerializerConfig {
    @Value("${spring.jackson.date-format}")
    private String pattern;

    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
        Map, JsonSerializer> map = new HashMap<>();
        map.put(LocalDateTime.class, localDateTimeSerializer());
        map.put(Long.class, ToStringSerializer.instance);
        return builder -> builder.serializersByType(map);
    }

    @Bean
    public LocalDateTimeSerializer localDateTimeSerializer() {
        return new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(pattern));
    }